二维孔隙结构内单相流动阻力特性数值模拟

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基金项目:

四川省青年科技基金(09ZQ026-031)

Numerical Simulation of Single-Phase Flow Resistance Characteristics in Two-Dimensional Porous Structure

CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Chengdu, 610041, Chins

摘要: 利用计算流体力学(CFD)商业软件CFX 10.0,采用标准k-ε、RNG k-ε以及SST模型3种不同的湍流模型,对矩形管内球形颗粒作2维有序排列所形成的孔隙流道的等温单相流动进行数值模拟,并与Ergun关系式预计值进行对比;探讨球形颗粒的排列方式、直径等对单相流动阻力的影响;研究矩形管内单位长度压降及阻力系数随孔隙雷诺数Re的变化规律(1.5≤Re≤1497)。
- 孔隙流道 /
- 单相流 /
- 数值模拟 /
- 压降 /
- 阻力系数
Abstract: A numerical simulation was carried out to study the resistance characteristics of single-phase isothermal flow in rectangular channels with two-dimensional regular packing of spherical particles using CFX 10.0.Simulated pressure drop of different turbulence models（Standard k-ε model,RNG k-ε model and SST model） were compared with the predicted values of Ergun’s equation.Particle packing style and particle diameter were considered as the important factors with effect on flow resistance in this paper.Besides,the pressure drop and drag coefficient variation trends were obtained when Reynolds number was in the range of 1.5~1497.
- Porous structure /
- Single-phase flow /
- Numerical simulation /
- Pressure drop /
- Drag Coefficient